/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/Stack/NiagaraStackEntry.h
Invalidates the cached filtered children so that the filters will be run the next time that GetFilteredChildren is called. This should be called any time a change to the data is made which will affect how children are filtered. This will also cause the structure changed delegate to be broadcast.
void RefreshFilteredChildren()